The new United States Football League will try to attract fans here by evoking memories and sentiments born a decade ago in the NFL. The Washington Federals will play George Allen's Chicago Blitz on Sunday, March 6 at RFK Stadium, one of five contests that will inaugurate the league's 18-week regular season.

The Federals have sold 9,000 season tickets, but team President James Gould predicted the return of former Redskins coach Allen would fill RFK Stadium.

"Everything that we've been working for has been leading to a confrontation with George Allen," Gould said yesterday. "George Allen reminds me of the Howard Cosell theory: you either love him or hate him, but you respect him and 90 percent of the people recognize him."

League officials said four of the USFL's 12 franchises will qualify for playoff games to be held July 9th and 10th, with the winners playing in a championship game on July 17th. Gould said Washington was one of several sites being considered for the championship game.

ABC will televise nationally one USFL game each Sunday. ESPN will broadcast 34 Saturday and Monday night games. Gould said the Blitz-Federals contest will probably be the ABC opener.

Gould said the Federals were planning an "Inaugural Ball" in Washington on March 4.

The league is divided into the Atlantic, Central and Pacific divisions. Each team will play a home-and-home series with the other teams in its division and with two other teams; all teams will play each another at least once.

The Federals, led by Ray Jauch, the former coach of the CFL's Winnipeg Blue Bombers, will be play in the Atlantic Division with the Boston Breakers, New Jersey Generals, and Philadelphia Stars.